Typescript Converstion

README.md

@@ -72,7 +72,7 @@ Sample usage:
 peggy --plugin ./src/tspegjs -o examples/arithmetics.ts --cache examples/arithmetics.pegjs
 ```
 
-(Note `./src/tspegjs` is the path to `tspegjs.js` in the project. If you installed ts-pegjs using npm, it should probably be `./node_modules/ts-pegjs/src/tspegjs`.)
+(Note `./src/tspegjs` is the path to `tspegjs.ts` in the project. If you installed ts-pegjs using npm, it should probably be `./node_modules/ts-pegjs/src/tspegjs`.)
 
 It will generarate the parser in the TS flavour.
 

package.json

@@ -37,26 +37,26 @@
     "pretest": "npm run clean",
     "build": "vite build",
     "test": "vite build && vitest run",
-    "lint": "eslint src/",
+    "lint": "eslint src/ --ext .ts",
     "release": "npm test && npm publish"
   },
   "peerDependencies": {
-    "peggy": "^2.0.1"
+    "peggy": "^3.0.2"
   },
   "devDependencies": {
-    "@typescript-eslint/eslint-plugin": "^5.56.0",
-    "@typescript-eslint/parser": "^5.56.0",
-    "eslint": "^8.36.0",
+    "@types/node": "^18.15.11",
+    "@typescript-eslint/eslint-plugin": "^5.57.0",
+    "@typescript-eslint/parser": "^5.57.0",
+    "eslint": "^8.37.0",
     "eslint-config-prettier": "^8.8.0",
     "eslint-plugin-prettier": "^4.2.1",
     "prettier": "^2.8.7",
     "rimraf": "^3.0.2",
-    "typescript": "^5.0.2",
+    "typescript": "^5.0.3",
     "vite": "^4.2.1",
     "vite-tsconfig-paths": "^4.0.7",
-    "vitest": "^0.29.7"
+    "vitest": "^0.29.8"
   },
-  "dependencies": {},
   "prettier": {
     "tabWidth": 2,
     "semi": true,

src/.eslintrc

@@ -1,4 +1,8 @@
 {
+    "parser": "@typescript-eslint/parser",
+    "plugins": [
+      "@typescript-eslint"
+    ],
     "parserOptions": {
         "sourceType": "module"
     },
@@ -15,13 +19,19 @@
             "off",
             "unix"
         ],
-        "quotes": [
-            "error",
-            "double"
-        ],
+        "quotes": 0,
         "semi": [
             "error",
             "always"
+        ],
+        "no-unused-vars": 0,
+        "@typescript-eslint/no-unused-vars": [
+            "warn",
+            {
+                "argsIgnorePattern": "^_",
+                "varsIgnorePattern": "^_",
+                "caughtErrorsIgnorePattern": "^_"
+            }
         ]
     }
 }

src/cli.ts

@@ -0,0 +1,94 @@
+#!/usr/bin/env node
+
+import * as fs from 'node:fs';
+import * as process from 'node:process';
+import peggy, { ParserBuildOptions } from 'peggy';
+import tspegjs from './tspegjs';
+import { version } from '../package.json';
+import { TsPegjsParserBuildOptions } from './types';
+
+const generate = peggy.generate;
+
+let args = process.argv;
+args.shift();
+args.shift();
+
+const needHelp = args.find((a) => a === '-h');
+
+if (args.length === 0 || needHelp) {
+  showHelp();
+  process.exit(0);
+}
+
+const inFile = args[args.length - 1];
+let outFile = inFile.replace('.pegjs', '.ts');
+args.forEach((arg, index) => {
+  if (arg === '-o') {
+    outFile = args[index + 1];
+  }
+});
+let allowedStartRules = null;
+let customHeaderFile = null;
+let customHeader = null;
+
+args.forEach((arg, index) => {
+  if (arg === '--allowed-start-rules') {
+    allowedStartRules = (args[index + 1] || '').split(',');
+  }
+  if (arg === '--custom-header') {
+    customHeader = args[index + 1];
+  }
+  if (arg === '--custom-header-file') {
+    customHeaderFile = args[index + 1];
+  }
+});
+
+const trace = args.find((a) => a === '--trace') ? true : false;
+const cache = args.find((a) => a === '--cache') ? true : false;
+
+function showHelp() {
+  /* eslint-disable no-console */
+  console.log('tspegjs v.' + version + '      TS target for pegjs');
+  console.log('Usage:');
+  console.log(
+    '  tspegjs [-o outFile.ts] [--allowed-start-rules <rule1,rule2>] [--trace] [--cache] [--no-tslint] [--tslint-ignores <rule1,rule2>] [--custom-header <header>] [--custom-header-file <headerFile>] <inGrammar.pegjs>'
+  );
+}
+
+function generateParser(
+  input_file: string,
+  output_file: string,
+  trace: boolean,
+  cache: boolean,
+  allowedStartRules: null | string[],
+  customHeader?: null | string,
+  customHeaderFile?: null | string
+) {
+  fs.readFile(input_file, function (err, data) {
+    if (err) throw err;
+
+    if (customHeaderFile && !customHeader) {
+      customHeader = fs.readFileSync(customHeaderFile).toString();
+    }
+
+    const opts: TsPegjsParserBuildOptions = {
+      output: 'source',
+      trace: trace,
+      cache: cache,
+      plugins: [tspegjs],
+      tspegjs: {
+        customHeader
+      }
+    };
+    if (allowedStartRules) {
+      opts.allowedStartRules = allowedStartRules;
+    }
+
+    // We must cast `opts` as a workaround for https://github.com/peggyjs/peggy/issues/403
+    // Remove when issue fixed
+    let parser = generate(data.toString(), opts as ParserBuildOptions);
+    fs.writeFileSync(output_file, parser.toString());
+  });
+}
+
+generateParser(inFile, outFile, trace, cache, allowedStartRules, customHeader, customHeaderFile);